Vania



no Model.) Sheets Sheet 1.

L. e. LAUREAU & 1-". W. GORDON.

STEEL FURNACE.

No. 407,600. Patented July 23, 1880. 7

Witnesses Inventors Attorney N. PETERS. mwrnm n w. Washinghm. o. c.

(No Model.) 2 Sheets-Sheet 2.

L. G. LAUREAU & F. W. GORDON.

STEEL FURNACE.

No. 407,600. Patented July 23, 1889.

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1 nesses: Inventors \NMWK "1 sax:

W 4/ j Attorney In PETERS. Fholo-mhognphar. wan-m n. c.

UNITED STATES PATENT ()FFICE.

LOUIS G. LAUREAU AND FRED. \V. GORDON, OF PHILADELPHIA, PENNSYL- VANIA,ASSIGNORS TO GORDON, STROBEL & LAUREAU, (LIMITED,) OF

SAME PLACE.

STEEL-FURNACE.

SPECIFICATION forming part of Letters Patent No. 407,600, dated July 23,1889.

Application filed July 13, 1888. Serial No. 279,878. (No model.)

To all whom, it may concern.-

Be it known that we, LOUIS G. LAUREAU and FRED. W. GORDON, ofPhiladelphia, Philadelphia county, Pennsylvania, have invented certainnew and useful Improvements in Steel-Furnaces, of which the following isa specification.

This invention relates to regenerative gasfurnaces for use insteel-works and the like.

IO Our improvements relate to the constructions of the connectionsbetween the regenerators and the heating or melting chamber.

Our improvements will be readily understood from the followingdescription, taken in I 5 connection with the accompanying drawings,

in which- Figure 1 is aplan of a furnace illustrating our improvementsthis View illustrating the covering as being removed from the ductsconnecting the heating or melting chamber with the left-hand pair ofregenerators, so as to expose the decks and regenerator parts connectedwith them; Fig. 2, a front elevation of the same, the portion of theleft, however, ap-

2 5 pearing'in vertical longitudinal section; Fig. 3, a verticaltransverse section through the heating or melting chamber; and Fig. 4, avertical transverse section through a portion of one of theair-regenerators, showing the 0 ducts communicating with the heating ormelting chamber. We have chosen, for illustration, an oval heating ormelting chamber and regenerators of rectangular plan.

Our invention is applicable to chambers 3 5 and to regenerators havingplans other than oval or rectangular, and the entire structure maybe atvarious heights above ground.

In the drawings, A indicates the heating or melting chamber; B, theleft-hand air-re- 4o generator disposed to the left of the heating ormelting chamber, but separate and distinct therefrom; O, the right-handair-regenerator, of similar construction and correspondingly arranged;D, the left-hand gasregenerator disposed close alongside the lefthandair-regenerator, but beyond the same relatively to the heating ormelting chamber; E, a similar right-hand gas-regenerator; F, the usualvalve-pit; G, the usual chimneyflue therefrom; H, the gas-inlet to thegasreversing valve; J, the usual gas-reversing valve; K, the air-inletto the air-reversing valve; L, the usual air-reversing valve; M,gas-flue from base of left-hand gas-regenerator to the gas-reversingvalve; N, a similar right-hand gas-flue; O, air-flue from base ofleft-hand air-regenerator to the air-reversing valve; P, a similarrightrhand air-flue; Q, the top levels of the regenerators, this levelcorresponding with the upper surface of the regenerator-roofs, and to behereinafter referred to as the regenerator-decks; R,parallel verti-v calwalls built upon the regenerator-decks and reaching to the Walls of theheating or melting chamber; S, gas-ducts formed between certain of thesewalls, these ducts extending from within the heating 'or melting chamberover the regenerators, three of these ducts being shown, one disposed atthe center and one near each face of the heating or meltlng 7o chamber;T, ports through the regeneratordecks, placing the gas-ducts incommunication with the interior of the gas-regenerators; U, air-ductsformed by certain of the walls R, these ducts extending parallel withthe 7 5 gas-ducts S from within the heating or melting chamber over theair-regenerators, these air-ducts alternating with the gas-ducts S, allof the ducts being, preferably, of greater depth than width; V,air-ports through the So -regenerator-decks, placing the air-ducts incommunication with the air-regenerators; W, the top level of the wallsR, this level being hereinafter designated as the cover-seat; X, thecover-work of brick, laid upon the coverseat and rooting the air and gasducts; Y, more idle spaces between certain of the walls R, resultingfrom the fact that the ducts U are shorter than the ducts S, nocover-work being placed over these spaces, the spaces thus being leftopen down to the regenerator-decks, and Z the spaces intervening betweenthe contiguous air-regenerators and gas-regenerators.

The regenerator's are to have the usual re- 5 generator-fillin g ofchecker-work. The gasreversing valve J maybe of the ordinaryconstruction and used in the ordinary way to put gas-flue M incommunication with-a gas-inlet l-I, While it puts gas-flue N incommunication with the chimney-flue G, the reversing of the valve simplyreversing the flue-connections, and the air-reversing valve L may be ofsimilar usual construction and arrangement With reference to theair-fines O and P and chim ney-fiue G.

The construction of the ducts and the advantages thereof will be readilyappreciated. The ducts S and U are continuous and direct from furnace toregenerators, the longer ones passing over the regenerator nearest thefurnace. Simple Wall-Work rests upon the regenerator-decks, producingparallel open-top passages, and the tops of these passages are closed bythe simplest forms of brick-Work, and any given portion of any givenduct is easily inspected and repaired. By these very important changesin construction We are enabled to secure correspondingly importantresults in the working of the furnace.

The pairs of regenerators are practically at the ends of the heating ormelting chamber;

and we Wish it understood that when referring herein to the sides of theheating or melt ing chamber or the ends of the heating or meltingchamber We use the terms synonymously.

We claim as our invention In aregenerative furnace, the combination,substantially as set forth, of a heating or melting chamber,regenerators alongside thereof and near thereto and provided with deckshaving ports, vertically-parallel Walls on said decks extending fromsaid chamber to said ports and forming direct open-top ducts fromchamber to ports, the longer duets thus formed extending across thenearerregenerators, and cover-work disposed on said Walls from chamberto ports and closing the tops of the ducts.

LOUIS G. LAUREAU. FRED. \V. GORDON.

*itnesses:

A. D. MCILHANEY, J OHN RADCLIFFE.

